/**
* Build the items tables
*/
private void buildItemTables() {
try {
final ItemGroupsXMLLoader loader = new ItemGroupsXMLLoader(new URI("/data/conf/items.xml"));
final List<DefaultItem> items = loader.load();
for (final DefaultItem item : items) {
final String clazz = item.getItemName();
if (classToItem.containsKey(clazz)) {